[PATCH v1] Bluetooth: btnxpuart: Enable status prints for firmware download

[Neeraj Sanjay Kale <neeraj.sanjaykale@nxp.com>]

This enables prints for firmware download which can help automation
tests to verify firmware download functionality.

Signed-off-by: Neeraj Sanjay Kale <neeraj.sanjaykale@nxp.com>
Tested-by: Guillaume Legoupil <guillaume.legoupil@nxp.com>
---
 drivers/bluetooth/btnxpuart.c | 32 +++++++++++++++++++++-----------
 1 file changed, 21 insertions(+), 11 deletions(-)

diff --git a/drivers/bluetooth/btnxpuart.c b/drivers/bluetooth/btnxpuart.c
index 0b93c2ff29e4..eb20a6544470 100644
--- a/drivers/bluetooth/btnxpuart.c
+++ b/drivers/bluetooth/btnxpuart.c
@@ -159,6 +159,7 @@ struct btnxpuart_dev {
 	u8 fw_name[MAX_FW_FILE_NAME_LEN];
 	u32 fw_dnld_v1_offset;
 	u32 fw_v1_sent_bytes;
+	u32 fw_dnld_v3_offset;
 	u32 fw_v3_offset_correction;
 	u32 fw_v1_expected_len;
 	u32 boot_reg_offset;
@@ -550,6 +551,7 @@ static int nxp_download_firmware(struct hci_dev *hdev)
 	nxpdev->fw_v1_sent_bytes = 0;
 	nxpdev->fw_v1_expected_len = HDR_LEN;
 	nxpdev->boot_reg_offset = 0;
+	nxpdev->fw_dnld_v3_offset = 0;
 	nxpdev->fw_v3_offset_correction = 0;
 	nxpdev->baudrate_changed = false;
 	nxpdev->timeout_changed = false;
@@ -565,7 +567,10 @@ static int nxp_download_firmware(struct hci_dev *hdev)
 							 &nxpdev->tx_state),
 					       msecs_to_jiffies(60000));
 	if (err == 0) {
-		bt_dev_err(hdev, "FW Download Timeout.");
+		bt_dev_err(hdev, "FW Download Timeout. offset: %d",
+				nxpdev->fw_dnld_v1_offset ?
+				nxpdev->fw_dnld_v1_offset :
+				nxpdev->fw_dnld_v3_offset);
 		return -ETIMEDOUT;
 	}
 
@@ -693,7 +698,7 @@ static int nxp_request_firmware(struct hci_dev *hdev, const char *fw_name)
 	if (!strlen(nxpdev->fw_name)) {
 		snprintf(nxpdev->fw_name, MAX_FW_FILE_NAME_LEN, "%s", fw_name);
 
-		bt_dev_dbg(hdev, "Request Firmware: %s", nxpdev->fw_name);
+		bt_dev_info(hdev, "Request Firmware: %s", nxpdev->fw_name);
 		err = request_firmware(&nxpdev->fw, nxpdev->fw_name, &hdev->dev);
 		if (err < 0) {
 			bt_dev_err(hdev, "Firmware file %s not found", nxpdev->fw_name);
@@ -781,7 +786,7 @@ static int nxp_recv_fw_req_v1(struct hci_dev *hdev, struct sk_buff *skb)
 	}
 
 	if (!len) {
-		bt_dev_dbg(hdev, "FW Downloaded Successfully: %zu bytes",
+		bt_dev_info(hdev, "FW Download Complete: %zu bytes",
 			   nxpdev->fw->size);
 		if (nxp_data->helper_fw_name && !nxpdev->helper_downloaded) {
 			nxpdev->helper_downloaded = true;
@@ -934,7 +939,7 @@ static int nxp_recv_fw_req_v3(struct hci_dev *hdev, struct sk_buff *skb)
 	}
 
 	if (req->len == 0) {
-		bt_dev_dbg(hdev, "FW Downloaded Successfully: %zu bytes",
+		bt_dev_info(hdev, "FW Download Complete: %zu bytes",
 			   nxpdev->fw->size);
 		clear_bit(BTNXPUART_FW_DOWNLOADING, &nxpdev->tx_state);
 		wake_up_interruptible(&nxpdev->fw_dnld_done_wait_q);
@@ -954,8 +959,9 @@ static int nxp_recv_fw_req_v3(struct hci_dev *hdev, struct sk_buff *skb)
 		goto free_skb;
 	}
 
-	serdev_device_write_buf(nxpdev->serdev, nxpdev->fw->data + offset -
-				nxpdev->fw_v3_offset_correction, len);
+	nxpdev->fw_dnld_v3_offset = offset - nxpdev->fw_v3_offset_correction;
+	serdev_device_write_buf(nxpdev->serdev, nxpdev->fw->data +
+				nxpdev->fw_dnld_v3_offset, len);
 
 free_skb:
 	kfree_skb(skb);
@@ -1037,7 +1043,7 @@ static int nxp_setup(struct hci_dev *hdev)
 		if (err < 0)
 			return err;
 	} else {
-		bt_dev_dbg(hdev, "FW already running.");
+		bt_dev_info(hdev, "FW already running.");
 		clear_bit(BTNXPUART_FW_DOWNLOADING, &nxpdev->tx_state);
 	}
 
@@ -1253,8 +1259,10 @@ static int btnxpuart_close(struct hci_dev *hdev)
 	ps_wakeup(nxpdev);
 	serdev_device_close(nxpdev->serdev);
 	skb_queue_purge(&nxpdev->txq);
-	kfree_skb(nxpdev->rx_skb);
-	nxpdev->rx_skb = NULL;
+	if (nxpdev->rx_skb) {
+		kfree_skb(nxpdev->rx_skb);
+		nxpdev->rx_skb = NULL;
+	}
 	clear_bit(BTNXPUART_SERDEV_OPEN, &nxpdev->tx_state);
 	return 0;
 }
@@ -1269,8 +1277,10 @@ static int btnxpuart_flush(struct hci_dev *hdev)
 
 	cancel_work_sync(&nxpdev->tx_work);
 
-	kfree_skb(nxpdev->rx_skb);
-	nxpdev->rx_skb = NULL;
+	if (nxpdev->rx_skb) {
+		kfree_skb(nxpdev->rx_skb);
+		nxpdev->rx_skb = NULL;
+	}
 
 	return 0;
 }
-- 
2.34.1